self-host langgraph

.gitea/workflows/build-push-agent.yaml

@@ -22,15 +22,12 @@ jobs:
           username: ${{ gitea.actor }}
           password: ${{ secrets.ACTIONS_PUSH_TOKEN }}
 
-      - name: Install uv
+      - name: Set up Docker Buildx
-        run: |
+        uses: docker/setup-buildx-action@v3
-          curl -LsSf https://astral.sh/uv/install.sh | sh
-          echo "$HOME/.local/bin" >> $GITHUB_PATH
 
-      - name: Build with langgraph
+      - name: Build and push
-        working-directory: ./web/agent
+        uses: docker/build-push-action@v6
-        run: |
+        with:
-          uv run langgraph build -t git.seaturtle.pw/cavepedia/cavepediav2-agent:latest
+          context: ./web/agent
-
+          push: true
-      - name: Push image
+          tags: git.seaturtle.pw/cavepedia/cavepediav2-agent:latest
-        run: docker push git.seaturtle.pw/cavepedia/cavepediav2-agent:latest

web/agent/pyproject.toml

@@ -16,5 +16,4 @@ dependencies = [
     "docstring-parser>=0.17.0",
     "jsonschema>=4.25.1",
     "copilotkit>=0.1.0",
-    "ag-ui-langgraph>=0.0.4",
 ]

web/agent/server.py

@@ -1,5 +1,5 @@
 """
-Self-hosted LangGraph agent server using CopilotKit's AG-UI protocol.
+Self-hosted LangGraph agent server using CopilotKit.
 """
 
 import os
@@ -7,23 +7,36 @@ from fastapi import FastAPI
 import uvicorn
 from dotenv import load_dotenv
 
-from copilotkit import LangGraphAGUIAgent
+from copilotkit import CopilotKitRemoteEndpoint, LangGraphAgent
-from ag_ui_langgraph import add_langgraph_fastapi_endpoint
+from copilotkit.integrations.fastapi import add_fastapi_endpoint
 from main import graph
 
 load_dotenv()
 
 app = FastAPI(title="Cavepedia Agent")
 
-add_langgraph_fastapi_endpoint(
+
-    app=app,
+def build_agents(context):
-    agent=LangGraphAGUIAgent(
+    """Build agents with auth context from frontend."""
+    user_roles = context.get("properties", {}).get("auth0_user_roles", [])
+    return [
+        LangGraphAgent(
             name="vpi_1000",
             description="AI assistant with access to cave-related information through the Cavepedia MCP server",
             graph=graph,
-    ),
+            langgraph_config={
-    path="/",
+                "configurable": {
+                    "context": {
+                        "auth0_user_roles": user_roles,
+                    }
+                }
+            },
         )
+    ]
+
+
+sdk = CopilotKitRemoteEndpoint(agents=build_agents)
+add_fastapi_endpoint(app, sdk, "/copilotkit")
 
 
 @app.get("/health")

web/agent/uv.lock

@@ -1006,7 +1006,6 @@ name = "vpi-1000"
 version = "1.0.0"
 source = { virtual = "." }
 dependencies = [
-    { name = "ag-ui-langgraph" },
     { name = "anthropic" },
     { name = "copilotkit" },
     { name = "docstring-parser" },
@@ -1023,7 +1022,6 @@ dependencies = [
 
 [package.metadata]
 requires-dist = [
-    { name = "ag-ui-langgraph", specifier = ">=0.0.4" },
     { name = "anthropic", specifier = ">=0.40.0" },
     { name = "copilotkit", specifier = ">=0.1.0" },
     { name = "docstring-parser", specifier = ">=0.17.0" },

web/src/app/api/copilotkit/route.ts

@@ -2,7 +2,6 @@ import {
   CopilotRuntime,
   ExperimentalEmptyAdapter,
   copilotRuntimeNextJSAppRouterEndpoint,
-  LangGraphHttpAgent,
 } from "@copilotkit/runtime";
 
 import { NextRequest } from "next/server";
@@ -23,13 +22,17 @@ export const POST = async (req: NextRequest) => {
   console.log("[copilotkit] session exists:", !!session);
   console.log("[copilotkit] userRoles:", userRoles);
 
-  // 2. Create the CopilotRuntime instance with self-hosted agent
+  // 2. Create the CopilotRuntime instance with remote endpoint
   const runtime = new CopilotRuntime({
-    agents: {
+    remoteEndpoints: [
-      "vpi_1000": new LangGraphHttpAgent({
+      {
-        url: process.env.LANGGRAPH_DEPLOYMENT_URL || "http://localhost:8000",
+        url: `${process.env.LANGGRAPH_DEPLOYMENT_URL || "http://localhost:8000"}/copilotkit`,
-      }),
+      },
-    }
+    ],
+    // Pass auth context as properties to the remote endpoint
+    properties: {
+      auth0_user_roles: userRoles,
+    },
   });
 
   const { handleRequest } = copilotRuntimeNextJSAppRouterEndpoint({